Apparatus for pressing and coating liners in crown caps



511116.16, 1942- A. RIVERA n 2,286,978

APPARATUS ,FOR PRESSING ND COATING LINERS IN CROWN CAPS Filed dot. 5, 1940 Patented June 16, 1942 APPARATUS FOR PRESSING AND COATIN G LINERS IN CROWN CAPS Antonio `Rivera, Mexico City, Mexico Application October 5, 1940, Serial No. 359,976 In Mexico March 279, 1940 3 Claims.

The present invention relates in general terms, to improvements in the machines for the assemblage of crown or tin cap-s, and more particularly to a new and useful device, adaptable to the aforementioned machines, whereby the application of paraiiineto the cork or cork conglomerate disk is accomplished in a very efficient manner. This cork cr cork conglomerate serves as packing for the preceding caps vand proves extremely useful to same, specially for avoiding emanations from the liquid contained in the bottle they close.

Up to the present time, the application of paraiine to the cork disk has been performed .by hand, once the tin cap has been completely manufactured, i. e. when coming out of the assembling machines; these machines adhere the usual cork conglomerate disks to the inner side of the tin crowns, without obtaining however a quick and uniform application of paraine. According to my invention, by means of a small additional device as well as a slight modification made to the rings holding the pressing bolts in the aforesaid assembling machines and tothe said bolts themselves, the paraiining procedure is carried out during the assemblage of the tin cap, without requiring an extra period and obtaining thereby a very uniform and efficient application of paraine to the cork.

In .order to obtain the above results, al1 that l is needed is to provide each pressing bolt of the assembling machine with some grooves or channels and suitable perforations which allow the passage of the hot parafline over the cork disk, and in addition make a groove or channel along means for supplying the` feeding system adapted to the assembling machines with paraffine or liquid Wax, as well as the means of effecting this feedingin suitable quantities and proportions. q

Further purposes, details and characteristics of the invention will be forthcoming in the following description as well as the drawing, illustrating it. The same gures or characters referred to are being used to point out or mark the same parts in the ve figures shown.

In accordance with this drawing:

Fig. 1 illustrates an elevation or birds eye view of the complete device that feeds the press cylinder of the crown caps` assembling machine with liquid paralne, which device is adapted to the machine. In said figure only a fragment of this press cylinder is shown. Fig. 2 is a fragmentary view of one of the pressing bolts lodged in the ring of the press cylinder of the tin caps assembling' machine, which bolt exerts a pressure by pressing the cork disk against the tin case over the plate of the aforesaid cylinder. To carry the liquid paraiiine to the exterior surface of the cork disk, these bolts are the ones that suffer slight modifications as well as the aforementioned ring of the press cylinder of the machine.

Fig. 3 is a ground sketch or the lower end of one of the pressing bolts, showing its channels or grooves and its central. perforation.

the entire periphery of the ring holding the aforesaid bolts through which the hot paraiine is to ow and to be deposited by means of suitable perforations in the above mentioned pressing bolts, already arranged suitably in the way indicated, as it may be appreciated clearly in the detailed description made in the annexed drawing. Besides, a small additional device supplying the hot parafline is required which is adequately provided with heating means as well as conduits or tubes.

According to the above, the main object of the invention is to procure practical and convenient means for the application of parane to the cork or cork conglomerate disk serving as packing to the crown cap during the proper manufacturing or assembling process of the tin cap, without there being any need of an additional period of operation.

Another one of its purposes is to provide the Fig. 4 is another fragmentary View in elevation of the pressing b'olt, the inferior end of which is shown in a vertical section according to the line A--B of Fig. 3.

Fig. 5 also presents an elevation view in vertical cut of that piece which constitutes the inferior end in which the pressing bolt is lodged. This is the piece which exerts a pressure on the cork disk against the tin capsule.

Before proceeding to describe in detail the invention, in accordance to what the annexed drawing illustrates, I should like to point out specifically thatfthis shows 4'merely a specimen of its practical application. However, this does not mean that the invention will be restricted to the specific details illustrated and described. Therefore, one may avail oneself of variations and modifications of secondary parts and accessories, without deviating from the principles and sphere of the invention, which is invariably within the reach of the clauses contained in the chapter concerning the claims. v

As illustrated in the annexed drawifg, (a) is the press cylinder, with which the well known crown caps assembling machines are equipped and into which the cork or cork conglomerate disks are pressed so as to fasten or adhere then to the interior of the tin capsule, an operation which is effected by means of the pressing parts or bolts (D), provided with its corresponding springs (c). The supporting column of the crown feeder is marked with (d), with which the aforesaid machines are always equipped and to which the parafline feeding device, to be described subsequently in detail, may be fastened. Of course, this parafne feeding device may be affixed to any other part of the machine considered suitable, the column (d) having been chosen as a mere instance of practical application.

As already inferred from the preceding paragraph, the cylinderI (a), the pressing bolts (D), provided with its springs (c) and the column (d) are already usual and known in the machines assembling the cork packing to the tin crowns. They are merely illustrated and described so that the invention may be easily understood by the technicians and because to certain parts of the aforementioned cylinder (a) modifications are made whi-ch render possible the distribution of a reduced quantity of parafne in the surface of each cork disk during its fastening process to the tin crowns.

It has already been mentioned that to the column of support (d) of the crown feeder or to any other part of the machine considered convenient and adequate, the parafne deposit is fastened. This is a closed receptacle I0, equipped with a lower conduct I I, that connects said deposit with a dripper I2, allowing the slow passage of the parafne contained in deposit I). The fastening of the paraffine deposit I to column (d) or any falling into it warm and consequently fluid, since the cylinder (a) and therefore the ring I1 has a rotary or revolving movement, as already well known, in all the crown or tin caps assembling machines. Besides, to the same ring I1 a plurality of oblique perforations or bored holes 22 (Fig. 4 of the drawing) is made, which originate from the bottom of the groove 20 until connecting with the part 22 that constitutes the inferior end of the pressing bolts (b), it being therefore necessary that each oblique perforation or bored hole 22 coincides with each pressing bolt (b) disposed in the ring I1 of the cylinder (a).

The pressing bolts (bi) are always composed of the pieces: the superior part 24, surrounded by the spring (c) and the piece 23, mentioned above, which practically is a hollow cylinder, closed in its base, reduces itself in its inferior end to the stem 25 that penetrates in the cavity 26 of piece 23, fastened to it by means of the slider 21 that passes through said stem 25 and the bored holes 28 drilled at the superior edgeA of piece 23 (Figs. 4 and 5 of the drawing).

Now, in order that the hot parailine flowing in the groove 20 made in the periphery of ring I1 communicates itself to piece 23 and passing through this is deposited on the surface of the cork disk (one has to bear in mind that the piece 23 constitutes the pressing part of the cork disk other part of the machine may be carried out through any other suitable means, for instance, by means of a clasp I3 holding a lid or plate I4, which in turn sustains a bolt I5, fastened to said deposit I0.

The dripper I2 or the parafline deposit I0 allows, as already stated, the slow passage of same towards the conduct or channel I5 which carries said liquid parafline to the ring i1, with which all the machines are equipped in the press cylinder. This ring directs the stroke of the pressing bolts (b) and with the modifications described in subsequent paragraphs carries said liquid parafline through the aforementioned pressing bolts (b) and deposits it gradually on the cork disks. Said channel I6 is fixed conveniently so that it receives the paraffine as it drops from the dripper I2.

To keep the parafline in deposit I0 at a warm temperature and in liquid form, so as to enable it to pass through conduct II and dripper I2 and flow into the inclined conduct or channel I6, a plurality of gas, oil or any other fuel burners is available and is fed through the common conduct I9. Their..flames will hold the bottom or deposit Ill an-d conduct II, as well as channel IB warm.

As stated in the preceding, there must be applied some modifications to the ring I1 of the press cylinder (a), consisting principally of a groove or hack 20, made by an oblique cut along the entire periphery of said ring, in the form indicated more clearly in the Figures 2 and 4 of the annexed drawing, this groove 23 being the one that receives the hot paraflne coming from the channel I6. A burner 2 I, disposed at the height of the channel or groove 20, keeps the parailine against the tin crown 29, illustrated with dotted lines in the Figs. 2 and 4 of the drawing), this piece 23 must in turn have an oblique perforation 30, that communicates precisely and effectively with the similar 22 of ring I1, while at the bottom as Well as at its center said piece 23 has another vertically bored hole 3l, through which the hot paralne passes directly to the surface of the cork disk. It is to be preferred that the exterior surface 32 of piece 23 has a plurality of channels or grooves 33, so that the parafline flows through them and extends itself on the cork disk.

In order that the cylindrical stem 25 of the superior part 24 of the pressing bolt (b) does not obstruct the diagonal perforation 30 made in the piece 23, it will have a small cut connecting with said perforation, as it is illustrated in Fig. 4 of the drawing; likewise, this same stem 25 will have a groove or channel 34 that serves only as draught establishing the current of air that facilitates the passage of the paraffine.

By this means, the paraffin@ contained in the receptacle ID in liquid state, is carried through the conduct I6 towards the channel or groove 2D of the ring I1, holding the pressing bolts, and through the perforations 22 coinciding exactly with the similars 3U of each piece 23 of same, as well as through the bored hole 3|, the paraine will reach the cork disk, where it expends through the grooves 33 made at the bottom of said piece 23.

Having thus described the invention, which I consider as new and desire to secure by Letters Patent is:

1. In a machine of the class described, a support for a crown cap, a plunger, means for moving the plunger into pressing relation with the liner cushion in a crown cap resting on the support, an element mounted in fixed relation to the support and having a bore of the same diameter as that of the plunger and through which the plunger operates, a fluid-coating-receiving channel in the outer surface of the member having a connecting passage with the bore, the plunger being provided with a passage having an outlet to register with the connecting passage in communicating With the coating outlet in that l0 surface, said grooves serving to distribute the fluid coating material on the surface of the cushion.

3. In a machine of the class described, a support for crown caps, a plurality of plungers, means for moving the plungers into pressing relation with the liner cushions in crown caps resting on the support, a ring surrounding and common to all the plungers and having an endless uid-coating-receiving channel on its outer surface, said channel having communicating passages through the ring to each of the plungers, each plunger being provided with a passage having an outlet to register with a communicating passage in the ring at a predetermined point in the path of movement of the plunger, each plunger passage having another outlet in the cushion engaging surface of the plunger, and means for delivering uid coating material to the ring channel.

ANTONIO RIVERA. 

